Add XNAP ASN.1 Definitions

* New folder named  XNAP created inside openair2
 * Added ASN File(38423.asn) for XNAP  and .cmake(38423.cmake) for the same inside XNAP.
 * CMakeLists.txt files changed to support .C and .H file generation for XNAP

CMakeLists.txt

@@ -388,7 +388,6 @@ add_library(x2ap
 target_link_libraries(x2ap PUBLIC asn1_x2ap)
 target_link_libraries(x2ap PRIVATE asn1_lte_rrc_hdrs asn1_nr_rrc_hdrs)
 
-
 # F1AP
 ##############
 set(F1AP_DIR ${OPENAIR2_DIR}/F1AP)

openair2/CMakeLists.txt

@@ -6,3 +6,4 @@ add_subdirectory(F1AP)
 add_subdirectory(M2AP)
 add_subdirectory(X2AP)
 add_subdirectory(RRC)
+add_subdirectory(XNAP)

openair2/XNAP/CMakeLists.txt

@@ -0,0 +1,7 @@
+add_subdirectory(MESSAGES)
+add_library(xnap xnap_common.c)
+target_link_libraries(xnap
+                        PUBLIC asn1_xnap
+                        PRIVATE nr_rrc)
+target_include_directories(xnap PUBLIC ${CMAKE_CURRENT_DIR})
+

openair2/XNAP/MESSAGES/CMakeLists.txt

@@ -0,0 +1,21 @@
+set(XNAP_VERSION 16 2 0)
+make_version(XNAP_cc ${XNAP_VERSION})
+#add_definitions(-DXNAP_VERSION=${XNAP_cc})
+string(REPLACE ";" "." XNAP_RELEASE "${XNAP_VERSION}")
+
+if(XNAP_RELEASE VERSION_EQUAL "16.2.0")
+  include(ASN1/xnap_R16.2.0.cmake)
+else()
+  message(FATAL_ERROR "unknown XNAP_RELEASE ${XNAP_RELEASE}")
+endif()
+
+add_custom_command(OUTPUT ${xnap_source} ${xnap_headers}
+  COMMAND ASN1C_PREFIX=XNAP_ ${ASN1C_EXEC} -pdu=all -gen-APER -no-gen-BER -no-gen-JER -no-gen-OER -gen-UPER -fcompound-names -no-gen-example -fno-include-deps -findirect-choice -D ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/${XNAP_GRAMMAR}
+  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${XNAP_GRAMMAR}
+  COMMENT "Generating XNAP source files from ${CMAKE_CURRENT_SOURCE_DIR}/${XNAP_GRAMMAR}"
+	)
+
+add_library(asn1_xnap ${xnap_source})
+target_include_directories(asn1_xnap PUBLIC "${CMAKE_CURRENT_BINARY_DIR}")
+target_compile_options(asn1_xnap PRIVATE -DASN_DISABLE_OER_SUPPORT -w)
+

openair2/XNAP/xnap_common.c

@@ -0,0 +1,48 @@
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#include <stdint.h>
+#include "xnap_common.h"
+#include "XNAP_XnAP-PDU.h"
+
+ssize_t XNAP_generate_initiating_message(uint8_t **buffer,
+                                         uint32_t *length,
+                                         XNAP_ProcedureCode_t procedureCode,
+                                         XNAP_Criticality_t criticality,
+                                         asn_TYPE_descriptor_t *td,
+                                         void *sptr)
+{
+  XNAP_XnAP_PDU_t pdu;
+  ssize_t encoded;
+  memset(&pdu, 0, sizeof(XNAP_XnAP_PDU_t));
+  pdu.present = XNAP_XnAP_PDU_PR_initiatingMessage;
+  pdu.choice.initiatingMessage->procedureCode = procedureCode;
+  pdu.choice.initiatingMessage->criticality = criticality;
+  ANY_fromType_aper((ANY_t *)&pdu.choice.initiatingMessage->value, td, sptr);
+
+  if ((encoded = aper_encode_to_new_buffer(&asn_DEF_XNAP_XnAP_PDU, 0, &pdu, (void **)buffer)) < 0) {
+    return -1;
+  }
+
+  *length = encoded;
+  return encoded;
+}
+

openair2/XNAP/xnap_common.h

@@ -0,0 +1,64 @@
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Author and copyright: Laurent Thomas, open-cells.com
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#ifndef XNAP_COMMON_H_
+#define XNAP_COMMON_H_
+
+#include "XNAP_XnAP-PDU.h"
+#include "intertask_interface.h"
+#include "common/openairinterface5g_limits.h"
+#include "oai_asn1.h"
+#include "XNAP_ProtocolIE-Field.h"
+#include "XNAP_InitiatingMessage.h"
+#include "XNAP_ProtocolIE-ContainerPair.h"
+#include "XNAP_ProtocolExtensionField.h"
+#include "XNAP_ProtocolExtensionContainer.h"
+#include "XNAP_asn_constant.h"
+
+#ifndef XNAP_PORT
+#define XNAP_PORT 38422
+#endif
+
+#define XNAP_FIND_PROTOCOLIE_BY_ID(IE_TYPE, ie, container, IE_ID, mandatory)                                                   \
+  do {                                                                                                                         \
+    IE_TYPE **ptr;                                                                                                             \
+    ie = NULL;                                                                                                                 \
+    for (ptr = container->protocolIEs.list.array; ptr < &container->protocolIEs.list.array[container->protocolIEs.list.count]; \
+         ptr++) {                                                                                                              \
+      if ((*ptr)->id == IE_ID) {                                                                                               \
+        ie = *ptr;                                                                                                             \
+        break;                                                                                                                 \
+      }                                                                                                                        \
+    }                                                                                                                          \
+    if (mandatory)                                                                                                             \
+      DevAssert(ie != NULL);                                                                                                   \
+  } while (0)
+
+ssize_t xnap_generate_initiating_message(uint8_t **buffer,
+                                         uint32_t *length,
+                                         XNAP_ProcedureCode_t procedureCode,
+                                         XNAP_Criticality_t criticality,
+                                         asn_TYPE_descriptor_t *td,
+                                         void *sptr);
+
+#endif /* XNAP_COMMON_H_ */